Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Rheostat control Cascade control Combination of cascade and pole changing Pole changing Rheostat control Cascade control Combination of cascade and pole changing Pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction An ideal traction system should have High starting tractive effort Easy speed control Equipment capable of withstanding large temporary loads All of the listed here High starting tractive effort Easy speed control Equipment capable of withstanding large temporary loads All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The rate of acceleration on sub-urban or urban services is restricted by the consideration of Engine power Passenger Discomfort Track size Track curves Engine power Passenger Discomfort Track size Track curves ANSWER DOWNLOAD EXAMIANS APP
Electric Traction In tram ways which of the following motors is used? A.C. three phase motor D.C. series motor AC. single phase capacitor start motor D.C. shunt motor A.C. three phase motor D.C. series motor AC. single phase capacitor start motor D.C. shunt motor ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following drives is suitable for mines where explosive gas exists? Steam engine Battery locomotive All of the listed here Diesel engine Steam engine Battery locomotive All of the listed here Diesel engine ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following is the disadvantage of electric traction over other systems of traction? Interference with communication lines Corrosion problems in the underground pipe work High capital outlay in fixed installations beside route limitation Short time power failure interrupts traffic for hours Interference with communication lines Corrosion problems in the underground pipe work High capital outlay in fixed installations beside route limitation Short time power failure interrupts traffic for hours ANSWER DOWNLOAD EXAMIANS APP
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